<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-page-3/#painting">
<meta name="assert" content="Test background image">
<link rel="match" href="background-001-print-ref.html">
<style>
  @page {
    margin: 4em;

    @top-center {
      content: "";
      background: url(/images/green.png);
    }
  }
  body {
    margin: 0;
  }
</style>
The background of the top page margin area should be lime.
